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我有一个带有Recyclerview的屏幕和LinearLayout中的其他元素.问题是当我删除RecyclerView的一个项目时,animateLayoutChanges在这种情况下不起作用.anayone知道为什么会这样吗？

XML

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.alvaro.resizetest.MainActivity">

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:animateLayoutChanges="true"
    android:orientation="vertical">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <LinearLayout
        android:id="@+id/test1"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="@color/colorAccent"
        android:gravity="center_vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="LinearLayout"
            android:textColor="#FFFFFF"
            android:textSize="22sp"/>
    </LinearLayout>


    <LinearLayout
        android:id="@+id/test2"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="@color/colorPrimaryDark"
        android:gravity="center_vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="LinearLayout"
            android:textColor="#FFFFFF"
            android:textSize="22sp"/>
    </LinearLayout>


    <LinearLayout
        android:id="@+id/test3"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="@color/colorAccent"
        android:gravity="center_vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="LinearLayout"
            android:textColor="#FFFFFF"
            android:textSize="22sp"/>
    </LinearLayout>


    <LinearLayout
        android:id="@+id/test4"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="@color/colorPrimaryDark"
        android:gravity="center_vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="LinearLayout"
            android:textColor="#FFFFFF"
            android:textSize="22sp"/>
    </LinearLayout>


</LinearLayout>

JAVA

public class MainActivity extends AppCompatActivity {

@Override
protected …

我正在尝试使用TextInputLayout创建一个BottomSheetDialogFragment.我将此BottomSheet设置为adjustResize以防止键盘覆盖TextInputLayout.问题是,我正在使用不同的Android版本获得不同的行为.

这是布局:

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.design.widget.TextInputLayout
    android:id="@+id/textInputLayout"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginBottom="16dp"
    android:layout_marginEnd="16dp"
    android:layout_marginStart="16dp"
    android:layout_marginTop="16dp"
    android:background="@android:color/darker_gray"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0.0">

    <android.support.design.widget.TextInputEditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="hint" />
</android.support.design.widget.TextInputLayout>

这是BottomSheetDialogFragment:

public class TestFragment extends BottomSheetDialogFragment {

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    getDialog().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);

    return inflater.inflate(R.layout.fragment_test, container, true);
}

}

这是期望的结果:

这是我在某些版本中得到的结果:

我得到了预期的结果:

• 搭载Android 7.0的Galaxy S6
• 模拟器<= Android 5.1

没有预期的结果:

• Nexus 5搭载Android 7.1.2(LineageOS 14.1)
• 模拟器=> Android 6.0

有谁知道为什么会发生这种情况或如何解决它？

提前致谢!!!

干杯.

我正在尝试在BottomSheetDialogFragment中设置一个viewpager,但总是具有相同的结果:

java.lang.IllegalStateException:Fragment没有视图

setupDialog

码:

@Override
public void setupDialog(Dialog dialog, int style) {
    Log.d(TAG, "setupDialog");
    super.setupDialog(dialog, style);

    View root = View.inflate(getContext(), R.layout.fragment_daily_detail, null);
    dialog.setContentView(root);
    CoordinatorLayout.LayoutParams layoutParams =
            (CoordinatorLayout.LayoutParams) ((View) root.getParent()).getLayoutParams();
    CoordinatorLayout.Behavior behavior = layoutParams.getBehavior();

    if (behavior != null && behavior instanceof BottomSheetBehavior) {
        bottomSheetBehavior = (BottomSheetBehavior) behavior;
        bottomSheetBehavior.setBottomSheetCallback(mBottomSheetBehaviorCallback);
        bottomSheetBehavior.setPeekHeight((int) getResources().getDimension(R.dimen.fragment_forgot_password_min_height));
        Log.d(TAG, "State: " + bottomSheetBehavior.getState());

        imageClose = root.findViewById(R.id.imageViewClose);
        textViewTitle = (TextView) root.findViewById(R.id.textViewTitle);
        peekLayout = root.findViewById(R.id.peekLayout);
        tabLayout = (TabLayout) root.findViewById(R.id.tabs);
        viewPager = (ViewPager) root.findViewById(R.id.viewPager);

        recyclerView = (RecyclerView) root.findViewById(R.id.recyclerView);

        timesheetDay = timesheetDayList.get(pageNumber);

        imageClose.setOnClickListener(new …

我有PreferenceFragment和CollapsingToolbarLayout的问题.我有一个基本布局:

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/mainLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activities.base.BaseActivity">

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbarLayout"
    android:layout_width="match_parent"
    android:layout_height="@dimen/nav_header_height"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/ctlLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

        <android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            android:minHeight="?attr/actionBarSize"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            app:layout_collapseMode="pin"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"></android.support.v7.widget.Toolbar>

    </android.support.design.widget.CollapsingToolbarLayout>

</android.support.design.widget.AppBarLayout>

<FrameLayout
    android:id="@+id/fragment_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    android:nestedScrollingEnabled="true"/>

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fabFav"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginRight="85dp"
    android:src="@android:drawable/ic_menu_save"
    app:layout_anchor="@id/appbarLayout"
    app:layout_anchorGravity="bottom|right|end"
    android:visibility="gone" />

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fabShare"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_margin="@dimen/fab_margin"
    android:src="@android:drawable/ic_menu_share"
    app:borderWidth="0dp"
    app:layout_anchor="@id/appbarLayout"
    app:layout_anchorGravity="bottom|right|end"
    android:visibility="gone" />

<fragment
    android:id="@+id/search_fragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:name="com.eventum.raedictionary.fragments.SearchFragment"
    tools:layout="@layout/fragment_search"/>

问题是当我用PreferenceFragment给Framelayout充气时,滚动不起作用,但正常的Fragment正常工作.

        BaseSettingFragment settingsFragment = new BaseSettingFragment();

        fragmentTransaction = getFragmentManager().beginTransaction();

        fragmentTransaction.setCustomAnimations(R.transition.fade_in, R.transition.fade_out);

        fragmentTransaction.replace(R.id.fragment_container, settingsFragment);

        fragmentTransaction.commit();

我没有找到任何解决这个问题的方法,任何人都可以帮助我吗？ …